24 hours GMT. A GMT function means that the watch has a second hour hand which completes one full rotation in 24 hours and a 24-hour index on the dial. Screw-in crown. Particularly useful for wearers who wish to track two time zones. Transparent case back. Anti-magnetic. Power reserve: 60 hours. Chronometer. The OMEGA Seamaster Aqua Terra 150M GoodPlanet GMT...